Coal-cutting machine.



PATENTED SEPT. 26, 1905.

C. O. PALMER.

COAL CUTTING MACHINE.

APPLICATION FILED our. 15,1901.

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PATENTED SEPT. 26, 1905.

C. O. PALMER.

GOAL CUTTING MACHINE.

APPLICATION mum OCT. 15,1001.

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No. 800,478. PATBNTED SEPT. 26, 1905.

0.0. PALMER. GOAL CUTTING MAGHINE.

APPLICATION FILED OCT. 15, 1901.

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u Inventor-z PATENTED SEPT. 26, 1905.

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G. O. PALMER.

GOAL CUTTING MACHINE.

APPLICATION IILEI) 00'1". 15,1901.

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No. 800,478. PATENTED SEPT. 26, 1905. G. O. PALMER.

COAL GUTTING MACHINE.

APPLICATION FILED oo'r. 15,1901.

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Witnesses;

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PATENTED SEPT. 26, 1905.

8 SHEETS-SHEET 6 & NEW/ I o. ,0, PALMER. GOAL CUTTING MACHINE.

APPLICATION FILED OCT. 15,1901.

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a. 0'. PALMER.

GOAL CUTTING MACHINE.

APPLICATION FILED OCT. 15, 1901.

PATENTED SEPT. 26, 1905.,

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PATENTED SEPT. 26, 1905.

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GOAL CUTTING MACHINE. APPi-ICATION nun new. 15, 1901.

Witnesses L Hpre Pat UNITED STATES PATENT oEEIoE.

oHARLEs OTIS PALMER, OF CLEVELAND, OHIO.

COAL-CUTTING MACHINE.

Specification of Letters Patent.

Patented Sept. 26, 1905.

Application filed October 15, 1901. Serial No. 79,124.

Cleveland, in the county of Guyahoga and State of Ohio, have invented certain new and useful Improvements in Coal-Cutting Machines, of which the following is a description, reference beinghad to the accompanying drawings, forming part of this specification.

The nature of the invention is as follows: The invention relates to a coal-mining machine.

A general understanding may be obtained by a brief description.

The machine has a long narrow frame supported by one or more rollers on each end.

ries a cutter-chain, which is driven by means or an electric or other motor mounted on the When the cutter-chain is not .run-

frame.

5 ning. the cutter-arm lies under the frame.

Previous to starting, the machine is placed 5 ilongside of and parallel to the working face, as shown in Figure 1, where it is anchored.

,; starts, driving the cutter-chain.

The current now being switched on, the motor By means of suitable feeding mechanism the cutter-arm is gradually turned horizontally on its journal to the position (shown in Fig. 1,) at the same time cutting a horizontal kerf beneath the coal up to the dotted line 1 of Fig. 1. v The feeding mechanism is then reversed and the cutter-arm is returned to its starting position under the 'machine-frame. The anchors are then withdrawn and the machine is rolled longitudinally along the working face to a new position and the operation is repeated, cutting the kerf to the dotted line 2 of Fig. l and again to thelines 3 4, &c., until the end of working face is reached. The machine is then taken to another room.

In the drawings, Fig. 1 is a plan of the corner of a mine-room, illustrating the mode of operating the machine. Fig. 2 is a section on line y z of Fig. 3. Fig. 3 is a plan of the front end of the machine. Fig. 4 is a top view of the machine on line TV IV of Fig. 6. Fig. 5 is a section in line u a: of Fig. 4. Fig. 6 is a longitudinal section on line .9 t of Fig. 4. Fig. 7is a front end View of the machine. Fig. 8 is a top view of the cutter-arm attached to the worm-wheel. Fig. 9 is a longitudinal section of Fig. 8, including also some adjacent parts. Fig. 10 is a section in line g a" of Fig. 8. Fig. 11 is a top view of an antifriction-roller of Fig. 9. Fig. 12 is a side view A cutter-arm is journaled at one end and car of roller in Fig. 11. Fig. 13 is a top View of the turret-ring in detail, with the halves separated and with the side bars detached. Fig. 14 isa section in line 0 p of Fig. 13. Fig. 15 is a vertical section of the disengaging mechanism of Fig. 6 when the driving-gear is out Fig. 16 is a section on line m n of Fig. 15. Fig. 17 is a top view and section of the washer of Fig. 15. Fig. 18' is a top view and section of the lifting-hook shown in Fig. 15. Fig. 19 is a rear end view of the machine. Fig. 20 is a section on line 74 Z of Fig. 19. Fig. 21 is a section on line i of Fig. 20, with parts of gear 108 broken away. Fig. 22isalongitudinal section through the front floor-auger of my preferred form. Fig. 23 is a'horizontal section on line 9 '12. of Fig. 22. Fig. 24is a side view of the augerbit. Fig. 25 is an end view of Fig. 24. Fig. 26 is a top view of the knock-01f mechanism on line efof Fig. 27. Fig. 27 is a longitudinal section ofthe knock-off mechanism on the line 0 d of Fig. 26. Fig. 28 is a section on line a Z) of Fig. 26. Fig. 29 is a section at the side of the'starting-lever 69 of Fig. 4. Fig. 30 is a view of Fig. 29 from the left side. Fig. 31'is aside view of the auger-key. Fig. 32 is a section on line w z of Fig. 22. Fig. 33 is a plan of the machine with certain parts broken away to illustrate the feeding mechanism. Fig. 34 is a top view of a part of Fig. 26, showing the dog 75 when turned to the disengaging position.

Similar characters refer to similar parts throughout the several views.

The machine has a low rectangular frame consisting of two side bars 6., secured together on the front end by the end bar 7 and on the rear end by the turret-ring D, formed in two pieces 8 and 9. (See Fig. 13.) Journaled within the ring D is the turret worm-wheel 12. The turret-ring (see Fig. 14) has a flange 15 formed on the inside above and a flange 16 below the worm-wheel to keep it' in place, and the ring is made in halves, which are held together and in place by the side bars 6, to which they are bolted. The bearing of the worm-wheel is preferably made-on the inside of the lower flange 16. By making the turretring in halves and forming flanges on the in side of the ring above and below the wormwheel the machine is made lighter and the height is reduced over the construction shown in my former patent, No. 594,898, of Decemher 7 1897.

The friction of of engagement.

the lower flange 16 of Fig.

IIO

14 may be relieved by inserting rollers 11 (see Fig. 9) between it and worm-wheel 12 and casting a flange underneath the rollers to keep them in position.

Passing vertically through the hub of the worm-wheel 1 2 is the center stud .17, having center pinion 18 and the gear-wheel 33 journaled on the upper end. Ontheunder sideof worm-wheel 12 (see Figs. 8 and 9) is the cutter' arm CLto which it is secured by the-center stucl 1-7-and=' the'bolt21. The cutter-armtsee 1=0) is constructed of an l-shaped beaml22 placed on its si'cleandhaving the cutter-chain guides 23 secured todtsfl'anges. AgttaChed to the chain guides 23 (see Figs. 8 and-9) isthe -pl'atehold'er 24, to which are secured the sprocket-wheel plates 25. The chain sprocketwheel 26 is--journaled between platesh25 on serew27,yas shown in Fi'gs. 8 and 91 JBy Ina ktheadjusting-screw 29, which is prevented from turning bytheset-screw on the upper end of stud 28. Passing vertically through the--wormwheel l-2'in line with the cutterearm 'isthe shaft-30, to the lower end of which is secured the sprocket-wheel 31, that carries the cutter-chain, and to the u pper'end is secured the sprocket shaft-gear 32', that engages the center pinion 18. For convenience in manufacturing the center gear 33 is secured in the shank of thecen-ter pinion. Tee'thare formed on the periphery of worm-wheel 12, (see Fig. 6,) which engage with worm 3'4,- wh'-ich is'situa ted in the housing 35-on the exterior of turret-ring D. On the top of said housing is bolted the jou.rnal-box 36 ('see Fig. 6) of the motor shaft 38.

'lheelectric motor lVl, whichis situated near the forward-end of the machine, issecured t'O-iDSUlaBiDgI-blOGRS 37 of Fig. 4, which are in turn bolted to the side bars 6. Near the end of 'the'm'oto r-shaft 38 and adjoining thejournal-box 36-is the m0torpinion 39, that "engages the centergear 33. Formed on the motor-shaft 38- (see Figs. 4 and 6) is the worm 41, which operates the feeding'm'echanis'm' through the transverse shafts 42 and 43. On shaft 42(see Fig. 4)is secured wormwh eel 44, which engages w orrn 41. Shaft '43 is operated through the spur-gears46 and 45. On the back side of the frame (see Figs. 4, 2B, and 27-)-is journaled the-longitudinal feedshaft 48, near one end of which is formed 'w0rm-49, that engages worm-wheel 50.

'volving. loosely on-the-longitudinal feed-shaft -48 isthe spiral gear 51, that engages gear 52 -en'shaftr42 and on shaft 43 is gear 54, that engages gear 53, that revolves loose on shaft 48. The gears 51 and 53 revolve continuously in opposite directions and are provided "on'their' sides with clutch-teeth 55 and 56,

respectively, as shown in Figs. 26 and 27. Sliding loosely onshaft 48 between gears 51 ta-ndi53 istheisleeve57, having clutch-teeth in eachend for engaging the clutch-teeth of gears 51- and 53.. The clutch-sleeve is made to rotat'eninione or the other direction by ensgaging' th'e; gears 5.1 or 53. .thelongitudinal'feed shaft 48, and the clutch- ,rod 58 in the center of shaft 48- are slotted The sleeve 57,

longitudinally \to -admit a cotter 59, which not only serves to slide the sleeve 57 into engagement, but touprevent it rotating on its shaft.

To feed \the' cutter-arm to :its Work, the

clutch-teeth 56 (see Fig. 26) are engagedwas hereinaflt'er' explained, and the rotation of the -motor=sha=ft 38- (see Fig. 4) is transmitted through: worm41, worm wheel 44,.(see Fig.6)

shaft 42, gears 46 and 45, (see Fig. 4,) shaft 43,. spiral gears 54 and :53, (see Fig. 27,-) clutch 56, sleeve 57, shaft 48, worm 49,

worm wheel 50, shaftfial, worm34, (see Figs.

3 and'6,-) and turret Worm-wheel 12,130 which the cutter-arm (J is attached. The cutterarm C having'swung to the extent of its out,

tomatic return: of the cutter-arm C is made l by'sliding sleeve 57,.as hereinafter explained,

into engagement with clutch 55, (see Figs. 26

i and 27,) when the motion of motor-shaft 38 instead oiibei n'g transmitted through spiral gears 531and 54 is transmitted through spiral gears51'and52, which reverses the direction ofrotation of shaft- 48, and consequently of the turret 'wormrsh'a ft worm-wheel and turret worm-wheel 1-2. When the clutch- I sleeve 57 is in the middle position, as shown in the drawings,(seez Figs. 26 and 27,):neither clutch nor 56 is inengagement, soneither the automatic feed nor the automatic-return is in operation.

As shown in Fig. 5, the gear. 45 revolves loosely on shaft 43 between flange 40, which iskey'ed on its shaft, and 47,. which is prevented from turning by a feather. Adjoining flange 47 is spring 13, whose compression 1 is regulated by the position of collar 14.

Leather washers are interposed between flanges 40 and 47 and the gear 45. The commore p'owerto feed'the cutter-arm than can be transmitted through the friction the feed is stopped and. injury to the machine is preclutches by hand I have the following mechanism: Clutch-rod 58 (see Figs. 33, 26, and 27) has a rack 63 on the front end that is operated by pinion 64: on shaft 65, that is held in position by the rack-block 66 on the back side and by block 67 (see Fig. 4:) on the front side. Pinned on starting-shaft is block 68. which holds the feed-lever 69:by the bolt 70. (See Figs. 29 and 30.) To start the automatic feed, the feed-lever 69 is turned to the dotted position 69 in Fig. 30 and for the automatic return to the dotted position 69 in the same figure. When the lever 69 is in the position shown in solid lines in Fig. 30, neither the feed nor return mechanism is in operation. When moving the machine, it is necessary to have the cutter-arm C remain stationary, so the lever 69 is turned to the dotted position in Fig. 29, where it is locked by the lower end of the lever engaging the slot of the piece 67. (Shown in said figure. )v

In order to automatically disengage, the clutches 55 and 56 when the cutter-arm has reached the extreme positions, the end of the feed-rod 58 is continued to the Worm-wheel 12, where it is supported in bearing 73. (See Fig. 4:.)

A pendant 74 of Figs. 33, 26, 27, and 28 turns loosely on the feedrod 58 between two collars. The pendant is forked at the lower end (see Fig. 28) and straddles a projection on the turret-ring, which, while allowing longi tudinal motion, prevents its transverse move ment. To the turret-Worm 12 is attached the dogv75 (see Fig. 26) by the stud 76, so-that as the cutter-arm C is returned from the outward position C (shown in Fig. 1) to the inward position (shown in Fig. 4t) the, dog 75 engages the pendant 74 (see Figs. 26 and 33) and moves it, together with the clutch-rod 58, longitudinally, thus disengaging clutch 55 and stopping the return movement of the cutter-arm. A stop 77 (see Fig. 4:) is formed on the turret worm-wheel 12, that engages the pendant 74:,

. and disengages clutch 56 when the cutter-arm C has reached its extreme outer position. (Shown in Fig. 1.)

It is often more convenient to set the cutterbits 79 (see Fig-.33) from the front side of the machine, in which case the cutter-armis swung to the front of the machine to the position of Fig. 1. To do this, the latch 82 of the dog 75 is swung to the dotted position shown in Figs. 28 and 34 by disengaging it from slot 83 of Fig. 8, and after turning the dog 75 to the position shown in Fig. 34 the latch is dropped into the side slot 8 1 of Fig. 8.

The dog 75 is then out of position for en-- gaging the pendant 74:, and the worm-wheel 12 continues to rotate until the pendant 74: is engaged by the stop 78, (see Figs. 1 and 8,)

thereby disengaging the clutch 55 of Fig. 27 and stopping the rotation of the cutter-arm. The starting of the rotary feed motion is done by operating lever 69 by hand, as already explained.

To accommodate the height of the cutterarm to the inequalities of the floor, the machine-frame may be tilted up to the position shown in dotted lines in Fig. 7 or downward inthe opposite direction, as will be now explained. To the front of the end bar 7 is bolted the roller-carrier 85, in Fig. 7, by bolt 86 (which also acts as a pivot on which it turns) and by the bolt 87., The end piece7 is slotted horizontally, as shown in dotted lines in Fig. 7, for bolt 87, and the roller-carrier is slotted diagonally for the same bolt 87. The head of bolt 87 is tapped to receive the adjusting-screw 88, (see Fig. 1;) which passes through the side bar 6 and engages it. The adjusting-screw is prevented from endwise motion by'a collar on each side of the side bar 6. By turning the adjusting-screw 88the bolt 87 is moved in the respective slots just mentioned to the dotted position shownin Fig. 7, and the end piece 7 assumes the dotted position in said figure. By turning the adjustingscrew in the opposite direction the machine- 'frame is tilted in the opposite direction. A hole for-the floor-auger is formed in the middle of the roller-carrier, and a roller 89 is held on each side of it, as shown in Fig. 7.

In the rear end of the machine are formed tubes 90 (see Fig. 13) for the reception of two floor-auger shanks. The rear end of the machine rests on the roller 91,(see Fig. 19,) which is supported by and between the said tubes 90. This roller 91 is made larger in the middle to allow the machine to accommodate itself to the position of the front roller when the frame is inclined, as already explained.

Then in the cutting position, the machine is held from sliding by an anchor on each end of the machine, which rests in a hole in the floor. In my preferred form the anchor consists of a floor-auger J, having a cylindrical shank 103 with an auger-bit 9a in the lower end, which makes a hole in the floor, wherein the auger may extend to form an anchor for holding the machine in position.

When the anchor is long, no brace to the roof is necessary, as the weight of the machine is sufiicient to keep it down; but when the anchor is short additional holding power is desirable, and I prefer to obtain it by a jackscrew 165 and brace leading to the roof. The brace most essential is the outer one on the rear end of the machine.

The auger-shank 103 is made in the form of a tube which loosely fits in the socket 104: of Fig. 13. Its lower end is threaded and splined in the inside to engage the auger-bit 94. There is also a feather on the upper end on the inside engaging screw 105 and a keyway on the outside engaging the auger-gear 107. Jackscrew 105-xvith a longitudinal keyway slides loosely within the auger-shank and engages the shank-feather. A threaded hand-wheel 106 rests on the auger-shank and engages the jackscrew 105. An auger-gear 107 slides longitudinally on the auger-shank 103 and has a feather engaging the spline in said auger- -:shank, by. which it is driven. I As shown in Fig. 4, the auger-gear 107 is driven from gear 32 through the idler 1-08. The idler 1'08 revolvesloosely on the stud 109 and when in engagement occupies the position shown in dotted lines of "Fig. 21. Passing through stud 109 is the handle 110, that passes through a slot in the frame,-as-show-n in Fig. 21. 'Handle 110 serves to raise the idler-gear 108 to its working position, Where it is locked by turning the handle to the left in the top endof the slot.

The floor-auger bit detailed in Figs. 24 and 25 is threaded'and splined on the outside and has cutting'edges on the end. It is screwed into'and keyed in the .lower'en'd ofthe shank 103 by the key'95 of Fig. 31. The thread serves to take thevertical thrust, while the key serves to take the torsion .of boring. When the braceB is used, the pressure of; the auger-against the floor is produced by turning the hand-wheel 106 on the screw 105. hen the brace B is not used, 'suflicient pressure for boring. is got. by hearing down on the top-of the auger by pressing on the hand-wheel 106.

When the auger-bit has been ground short by sharpening, it is lengthened by unscrewing it the requisite-amount.

The extensionbrace B may be simply a wooden post with the ends sawed ofl square; but I prefer that shown in Fig. 19. The brace here shown comprises a post-=97, havinga telescopic cap 98, which slides on the top end, and a spring 99 is interposed between the post and the hollow cap. A rubber cushion 100 on the end of the brace secures an even bearing against the roof and prevents slipping. This elastic brace maintains a pressure against the screw even when the floor y-ields' somewhat to the pressure against it.

The machine is set-at the :desired elevation and inclination to cut the kerf. Then the holes are drilled in the floor, and the machine is anchored, the rear end braces in the meantime being set tightly against the roof by the hand-wheels 106 without danger of changing the position of the machine. Atu'rn of the clamp-handles 115 thensecures the machineframe to the auger-shank without straining the frame or altering its position.

The ordinary mining-machine jack presses the supporting-frame against the floor, thereby changing its setting and distorting the frame and without indenting the floor, as my construction does, and hence with less holding power.

which slide horizontally in the frame. 114 is hollow,:-andI-throughits center passes the threaded-end of i 113. The clamp-handle 115 screws onto the block 113, thus forcing itand 114against the shank 103 of the floorauger andsecuring it to the machine-frame.

,It is obvious that other well-known forms of clamps, as-a set-screw or a split clamp, would answer the same purpose. When so desired, the clamp mayalso be used to hold the auger up so it is clear of the floor.

The boring in the floor may-be done by hand instead-of by power, as shown inFigs. 6 and 7, where the auger is turned by the hand-wheel 112,-which is securedon the augers hank 103 by-a set-screw or preferably a taper key.

In order to raise theauger clear of thefloor while the machine is being movedfrom one cutting position to another, it'is supported-on aspiral springlll, (seeFigs. Sand 7,) placed between the machine-frame and the said handwheel-112. Time issaved, however, by using :power for boring, and this is done by the arrangement shown in Figs. 2 and 3, also 22 and 23,where anauger-gear 120 with afeather on the inside slides on the auger-shank103 and engages the spline on same. A spiral gear-121 is splined on the motor-shaft 38and engages spiral gear 122, which engages 123, and it in turn engages 120, and so turns the front-end floor-auger. The gear 121 may be disengaged by sliding itto the dotted position shown in Fig. 22, where it remains While the chain is cutting. The gear 121 on the motorshaft is kept in its engaged or disengaged position by means of the latch 125, (see Figs. 2 and 3,)-wihich is hinged on the stud 124, on which it slides to the'position showninsaid figures.

To utilize the power-of the motor for moving the machineythe pulley-shaft 126 (see Fig; 4) is supported in bearings by the jourrial-box 36 andthe-side-bar journal 127. On the pulley-shaft 126 issecured the gear 129, that engages gear 130 on shaft 42 and from which it derives its motion. Secured on pulley-shaft126 is pulley 128.

When from the nature of the floor the machine is not easily rolled from one cutting position to another, the power of the motor may be utilized for this purpose, as follows: A hauling-rope 133 in Fig. 1 has one end attached to a prop or some other stationary object and theother end passed half. around the grooved pulley 128. The sides of the -groove are inclined to give the requisite friction of the rope, the loose end of the rope being taken up by the operator. Heretofore a drum has been used for hauling the machine and therope given several turns around same to give the requisite friction; but by substituting a grooved pulley with inclined sides therefor the lateral projection beyond the side of the machine is lessened and the Block width required for the machine to pass is thus considerably' reduced, which is a mate rial advantage in the narrow passages of the mine.

The center arm C may be operated by hand by a crank on the pulley-shaft 126, (see Figs. 4 and 5,) through the medium of gears 129 and 130 and shaft 42; but in this case the worm-wheel 44 must be slid out of engagement with worm 41 to the position shown in dotted lines in Fig. 5.

\Vhen the motor is used for moving the machine, it is safer not to have the cutterchain driven by the motor. I disconnect the driving-gear by raising the center gear 33 from engagement with the motor-pinion 39. (See Fig. 6.) This is accomplished as follows, (see Figs. 15, 16, 17, and 18:) The center stud 17 has a tapped hole in the center of its upper end and a groove cut in its side in the upper half of its length. (See Figs. 15 and 16.) A center screw 144, having a collar and a handwheel 145 on its upper end, enters the threaded hole. A lifting-hook 146, having an eye on its upper end and a hook on its lower end, is fitted to slide in the groove of the center stud. The center screw passes through the eye of the lifter which rests on the collar of the screw. (See Fig. 15.) The lower end of the lifter is bent to project under the pinion 18, so that by turning the center screw 144 by the hand-wheel 145 the upward movement of the center screw 144 lifts the pinion 18, and hence the gear 33, out of engagement with the motor-pinion 39; When in the lower or driving position, the gear 33 is held down in close engagement with the motor-pinion 39 by the center screw 144 acting through the washer 147 on its upper side.

I have not described the motor, as it is substantially like other coal-cutter motors well known in the art and whose details are too well known to require mention. I might state, however, that it should be provided with means for reducing its speed while boring and during its transportation.

1 have herein described the operation of the machine (see Fig. 1) as beginning on the right side of the room; but the cutting may equally well commence on the left side of the room and each successive out be made at the right of the preceding one.

The terms front and rear of the machine are arbitrary and may be reversed.

I have not in this application claims covering completely the holding'device here shown, as it forms the subject of my applications for mining-machines, Serial No. 134,717, filed December 10,1902, and Serial No. 168,598, filed August 7, 1903.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. In a mining-machine, the combination,of a machine-frame having a turret-ring in one I end, said ring being split vertically in halves and having an upp r and lower inside flange formed integral with said turret-ring, a wormwheel situated within said ring between said flanges and carrying a cutter-arm with a revolving cutter thereon.

2. Thecombination in a mining-machine, of a machine-frame, a turret worm-wheel journaled in the end of said frame and carrying the cutter-arm with a revolving cutter there- -on, a transverse shaft carrying a worm engaging said turret worm-wheel, and a wormwhee-l engaging a worm on a longitudinal feedshaft, clutch-gears loosely mounted on said shaft, a sliding clutch-sleeve adapted to engage either of said gears, a knock-off rod engaging said sliding clutch, a stop on the turret worm-wheel operating the knock-off rod, means for revolving said clutch-gears, means for operating said cutter and means for holding the machine-frame in place.

3. The combinationina mining-machine, of a machine-frame, a worm-wheel journaled in said frame and carrying a cutter-arm with a revolving cutter thereon, a turret worm-shaft carrying a turret-worm and a worm-wheel 50, a longitudinal feed-shaft carrying a Worm, and also the oppositely-revolving gears 51 and 53 respectively, having clutch-teeth, a sliding clutch-sleeve adapted to engage with either of said gears, a knock-ofi rod operating said sleeve, a hinged knock-off stop on the worm-- wheel engaging the knock -ofi' rod, means for revolving gears 51 and 52, means for revolving said cutter and means for holding said machine-frame in place.

4. The combination in a mining-machine, of a machine-frame, a worm-wheel journaled in said frame and carrying a cutter-arm with a revolving cutter thereon, a turret worm-shaft carrying a turret-worm 34 and worm-wheel 50, a-longitudinal feed-shaft carrying worm 49 and also two oppositely-revolving gears 51 and 53 respectively, having clutch-teeth on one side, a sliding clutch-sleeve adapted to engage either of said gears, a knock-ofl rod operating said sleeve, a hinged knock-ofl stop on the worm-wheel engaging the knock-off rod, friction-gear 45, means for rotating said gear 45, means for operating said cutter, and means for holding said machine-frame in place.

5. The combination in a mining-machine, of a machine-frame, a worm-wheel journaled in said frame and carrying a cutter-arm with a revolving cutter thereon, a turret worm-shaft carrying a turret-worm 34 and worm-wheel 50, a longitudinal feed-shaft carrying worm 49, two gears loosely mounted on said shaft. a clutch device for securing either of said gears to said shaft, a knock-ofi' rod operating said sleeve, a hinged knock-off stop on the worm-wheel engaging the knock-01f rod, feed friction-gear 45, means for rotating said gear, a rack on the knock-off rod, a pinion engaging the rack, and means for rotating said pinion, substantially as described.

amachine-frame. acutter-arm carrying a horizontally-revolving cutterjournaled in one end of the frame, a motor for actuating said outter, a roller-carrier adj ustably swiveled on the end of the frame, an anger mounted to rotate on said roller-carriage, an auger-bit in auger, gears connecting said auger-gear with the motor-shaft substantially as set forth.

7. The combination in a mining-m achine, of a machine-frame, a worm-wheel journalecl in said frame and carrying a revolving cutter, a motor on the machine-frame, a beveled pinion on the motor-shaft, a hub in said Wormwheel, a stud in said hub. a beveled gear journaled on said stud and engaging said beveled pinion and means for disengaging said gear and said pinion, substantially as described and for the purpose set forth.

8. The combination in a mining-machine, of a machine-frame, a worm-wheel journaled in motor on the machine-frame, a beveled pinion on the motor-shaft, a hub in said wormloosely in saidframe, a jack-screw within said wheel, a stud in said hub, a groove in the side i of said stud, a threaded hole in the end of said stud, a flanged screw with handle engagnaled on said stud and engaging said beveled pinion, a lifting-hook situated in said groove screw at its upper end and the said beveled gear at its lower end, substantially as described for the purpose set forth.

9. The combination in a mining-machine, of

a supporting-frame, a floor-auger mounted on said frame and adapted to be driven into the i ing correction, as follows: The title printed Mining Machines instead of said Letters Patent should be read with [SEAL.]

floor to form an anchor for retaining the machine in position, and means for turning said 6. The combination mammmg-machme, of

auger substantially as set forth.

10. The combination with a mining-machine, of its supporting-frame, asubstantially vertical auger mounted thereon in position to be driven into the floor of the mine to form an anchor, motor mechanism and means for connecting and driving said auger thereby, the bottom end of said auger, a gear on said 1 and adapted to form an anchor forholding said frame in position, and suitable means for rotating the auger substantially as set forth.

12. The combination in a mining-machine,

of the supporting-frame, an auger-shank sliding loosely in said frame, a jack-screw within said auger-shank, a brace from said screw to the root, anda clamp on said frame securing the frame and shank together substantially as 1 set forth. said frame and carrying a revolving cutter, a

13. The combination with a miningmachine, of a supporting-frame, an anger sliding auger and a brace from said screw to the roof,

. a clamping device securing said frame to said drill comprising slidable blocks entering a ing the said threaded hole, abeveled gear jourhole in the frame and bearing against the au- 58-59, of the printed specifications the number and date December 10, 1902, should read Serial No.

1 blocks and pressing them against the auger, in said stud and engaging the flange on said substantially as set forth.

Signed by me at Cleveland, Ohio, this 9th day of October, 1901.

CHARLES OTIS PALMER. Witnesses:

VICTOR (J. LYNCH, DANIEL E. DALY.

It is hereby certifiedthat in Letters Patent No. 800,478, granted September 26, 1905, upon the application of Charles Otis Palmer, of Cleveland, Ohio, errors appear requirof the invention should have been written and Coal-Cutting Machines, and on page 5, lines Serial No. 134,717, filed 261,252, filed May 19, 1.905; and that the these corrections therein that the same may conform to the record of the case in the Patent Ofiice.

Signed and sealed this 10th day of October, A. D., 1905.

F. I. ALLEN,

Commissioner of Patents.

ing the rack, and means for rotating said pinion, substantially as described.

amachine-frame. acutter-arm carrying a horizontally-revolving cutterjournaled in one end of the frame, a motor for actuating said outter, a roller-carrier adj ustably swiveled on the end of the frame, an anger mounted to rotate on said roller-carriage, an auger-bit in auger, gears connecting said auger-gear with the motor-shaft substantially as set forth.

7. The combination in a mining-m achine, of a machine-frame, a worm-wheel journalecl in said frame and carrying a revolving cutter, a motor on the machine-frame, a beveled pinion on the motor-shaft, a hub in said Wormwheel, a stud in said hub. a beveled gear journaled on said stud and engaging said beveled pinion and means for disengaging said gear and said pinion, substantially as described and for the purpose set forth.

8. The combination in a mining-machine, of a machine-frame, a worm-wheel journaled in motor on the machine-frame, a beveled pinion on the motor-shaft, a hub in said wormloosely in saidframe, a jack-screw within said wheel, a stud in said hub, a groove in the side i of said stud, a threaded hole in the end of said stud, a flanged screw with handle engagnaled on said stud and engaging said beveled pinion, a lifting-hook situated in said groove screw at its upper end and the said beveled gear at its lower end, substantially as described for the purpose set forth.

9. The combination in a mining-machine, of

a supporting-frame, a floor-auger mounted on said frame and adapted to be driven into the i ing correction, as follows: The title printed Mining Machines instead of said Letters Patent should be read with [SEAL.]

floor to form an anchor for retaining the machine in position, and means for turning said 6. The combination mammmg-machme, of

auger substantially as set forth.

10. The combination with a mining-machine, of its supporting-frame, asubstantially vertical auger mounted thereon in position to be driven into the floor of the mine to form an anchor, motor mechanism and means for connecting and driving said auger thereby, the bottom end of said auger, a gear on said 1 and adapted to form an anchor forholding said frame in position, and suitable means for rotating the auger substantially as set forth.

12. The combination in a mining-machine,

of the supporting-frame, an auger-shank sliding loosely in said frame, a jack-screw within said auger-shank, a brace from said screw to the root, anda clamp on said frame securing the frame and shank together substantially as 1 set forth. said frame and carrying a revolving cutter, a

13. The combination with a miningmachine, of a supporting-frame, an anger sliding auger and a brace from said screw to the roof,

. a clamping device securing said frame to said drill comprising slidable blocks entering a ing the said threaded hole, abeveled gear jourhole in the frame and bearing against the au- 58-59, of the printed specifications the number and date December 10, 1902, should read Serial No.

1 blocks and pressing them against the auger, in said stud and engaging the flange on said substantially as set forth.

Signed by me at Cleveland, Ohio, this 9th day of October, 1901.

CHARLES OTIS PALMER. Witnesses:

VICTOR (J. LYNCH, DANIEL E. DALY.

It is hereby certifiedthat in Letters Patent No. 800,478, granted September 26, 1905, upon the application of Charles Otis Palmer, of Cleveland, Ohio, errors appear requirof the invention should have been written and Coal-Cutting Machines, and on page 5, lines Serial No. 134,717, filed 261,252, filed May 19, 1.905; and that the these corrections therein that the same may conform to the record of the case in the Patent Ofiice.

Signed and sealed this 10th day of October, A. D., 1905.

F. I. ALLEN,

Commissioner of Patents.

It ishereby certified that in Letters Patent No. 800,478, granted September 26, 1905, upon the application of Charles Otis Palmer, of Cleveland, Ohio, errors appear requiring correction, as follows: The title of the invention should have been written and printed Mining Maehines instead of Coal-Cutting Machines, and on page 5, lines 58-59, of the printed specifications the number and date Serial No. 134,717, filed December 10, 1902, should read Serial No. 261,252, filed May 19,1905; and that the said Letters Patent should be read with these corrections therein that the same may conform to the record of the case in the Patent Office.

Signed and sealed this 10th day of October, A. D., 1905.

[SEAL] F. I. ALLEN,

Commissioner of Patents.

Correc.. 

